Frequentist and Bayesian Confidence Intervals

Details Frequentist and Bayesian Confidence Intervals Frequentist and Bayesian Confidence Intervals

2001-06-05

arxiv.org/abs/hep-ex/0106023v2

Eur.Phys.J.direct C4 (2002) 12

Physics

High Energy Physics

High Energy Physics - Experiment

64 pages, 26 figures

Scientific paper

Frequentist (classical) and the Bayesian approaches to the construction of confidence limits are compared. Various examples which illustrate specific problems are presented. The Likelihood Principle and the Stopping Rule Paradox are discussed. The performance of the different methods is investigated relative to the properties coherence, precision, bias, universality, simplicity. A proposal on how to define error limits in various cases are derived from the comparison. They are based on the likelihood function only and follow in most cases the general practice in high energy physics. Classical methods are not recommended because they violate the Likelihood Principle, they can produce physically inconsistent results, suffer from lack of precision and generality. Also the extreme Bayesian approach with arbitrary choice of the prior probability density or priors deduced from scaling laws is rejected.

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